Phishing, not to be confused with Fishing, is a scam that is aimed at stealing one's personal identity. Phishing began in the mid 1990's when internet usage was becoming more common in regular homes. Users were receiving e-mail massages to their AOL accounts that ___________________ , but in reality were cons aimed at trying to steal people's valuable information. As it became more convenient to purchase on line as well as complete on-line banking, this gave scammers even more freedom to hack into people's accounts and not only steal their indentities, but also their money.

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(a) urged receivers to send money
(b) seemed to help out receivers
(c) were masked as legitimate e-mails
(d) were sent by some scammers
전 b했는데 c가 답이라고 합니다. 저의 논리에 무슨 문제가 있는건가요? 해설은 cons (사기) 때문에 legitimate가 답이라는데 사기의 반대를 찾는다면 help out도 답이 될수 있잖아요. 가르쳐주세용ㅜ